body{background-color:#f7f6f4}
.top-title{height:40px;line-height:40px;position:fixed;border-bottom:1px solid #e7e7e7;width:100%;z-index:999;background:#FFF;color:#000;top:0}
.top-title .go-back{position:absolute;height:40px;width:40px}
.top-title .go-back svg{width:20px;fill:currentColor;height:40px;margin-left:10px}
.top-title h4{text-align:center;font-weight:normal;margin:0;line-height:inherit;font-size:16px}
